remove jslint.js' need for directive /*jslint long */ to lint itself, by ignore long regexp's (and comments)

[kaizhu256]

this patch will allow jslint.js to successfully lint itself with without the directive /*jslint long */,
by ignoring long-lines containing regexp's and comments.

i find ignoring long-comments, like source-code references to stackoverlow useful (see screenshot).

live web-demo of patch available at:
https://kaizhu256.github.io/JSLint/branch.jslint_pass_itself_without_long_option/index.html

yay! jslint.js passes without needing long-option

example where a long-comment (reference-link to stackoverflow) can be useful.
note that the long code-line still triggers a warning.

[douglascrockford]

I have long regexps because currently the language does not provide a way to break them into smaller chunks. I am hopeful that that will be repaired someday.

The language already as support for breaking comments.

[kaizhu256]

I have long regexps because currently the language does not provide a way to break them into smaller chunks. I am hopeful that that will be repaired someday.

that's likely not going to happen in the forseeable future, given the current sentiment of tc39 to be more cautious with syntax changes. instead of wishful thinking on a more-or-less [permanent] todo, perhaps it would make more sense to break the regexp literal as a string with a RegExp call?

const rx_token = new RegExp(
    "^((\\s+)|([a-zA-Z_$][a-zA-Z0-9_$]*)|[(){}\\[\\]?,:;'\"~`]|=(?:==?|>)?|\\.+"
    + "|[*\\/][*\\/=]?|\\+[=+]?|-[=\\-]?|[\\^%]=?|&[&=]?|\\|[|=]?|>{1,3}=?"
    + "|<<?=?|!(?:!|==?)?|(0|[1-9][0-9]*))(.*)$"
);

[douglascrockford]

Thanks. Please try it now.